Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef8cc592e8bad32…

MALICIOUS

PDF

6.2 KB Created: 2021-08-29 10:26:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e06f838bd66cc41efed19a0c996c1c3e SHA-1: 57816d7a6f7d2e55511bec324f185edf57a8c2e2 SHA-256: fef8cc592e8bad325b25f9200ccdfccac3bea1cbd7c6de7a0cf70e27037013bf
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, containing minimal text and a clickable action that directs the user to a deceptive URL. This pattern is commonly used in phishing campaigns to trick users into visiting malicious websites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7181

Heuristics 4

  • Image-only PDF lure links to a deceptive (typosquat) host high PDF_IMAGE_LURE_DECEPTIVE_HOST_LINK
    PDF is image-heavy with little real text and its clickable action targets a host that impersonates a security/service/brand word with a look-alike homoglyph substitution — a digit OR a confusable letter (e.g. 'serv1ce', 'servlce', 'upd4te', 'm1cr0s0ft') — on a domain that is not a known-good site. This is a credential-phishing / fake-update carrier shape: a screenshot-like page funnels the victim to a deceptive look-alike destination.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 6 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ilana67.updta78-serv1ce.info PDF link annotation